Help ! Are you smarter that a 5th grader ?

Nikon AF Nikkor 50mm f/1.8D

05/10/2011 10:38:21 PM · #1

Use a proportion to solve:

65 is 260% of what number?

I can easily do the math...but how do you set up in the proportion format?

65/100 = x/260 type thing....

frisca

Nikon D70

05/10/2011 10:42:50 PM · #2

65/100 = 260/x is what you want, no?

05/10/2011 10:43:06 PM · #3

65/x = 260/100

05/10/2011 10:43:16 PM · #4

checking ...hold !

Originally posted by frisca:

65/100 = 260/x is what you want, no?

05/10/2011 10:43:22 PM · #5

260/100 = 65/x

05/10/2011 10:44:32 PM · #6

Originally posted by frisca:

65/100 = 260/x is what you want, no?

i believe this would represent 260 is 65% of which number

05/10/2011 10:46:36 PM · #7

Yes...! 25 is the answer...thanks

Originally posted by FourPointX:

65/x = 260/100

05/10/2011 10:48:23 PM · #8

So 65 is 260% of 25.

I can easily do the math in my head but my kid need it like you gave it to me...

Here is another coming up....

Originally posted by kenskid:

Use a proportion to solve:

65 is 260% of what number?

I can easily do the math...but how do you set up in the proportion format?

65/100 = x/260 type thing....

05/10/2011 10:48:56 PM · #9

I think this is the way I was writing it and it was off because of the transposition

Originally posted by frisca:

65/100 = 260/x is what you want, no?

05/10/2011 10:49:49 PM · #10

Originally posted by kenskid:

I think this is the way I was writing it and it was off because of the transposition

Originally posted by frisca:
65/100 = 260/x is what you want, no?

The answer to this one would be x=400.

05/10/2011 10:50:33 PM · #11

Ok...

Percent of markup. Use in Proportion format to find answer.

$32.00 marked up to $47.50. You can round to nearest 10th.

$15.50 is the difference so it would be something like 15.50 is what percent of 32 ...right?

Message edited by author 2011-05-10 22:53:39.

05/10/2011 10:53:56 PM · #12

Originally posted by kenskid:

Ok...

Percent of markup. Use in Proportion format to find answer.

$32.00 marked up to $47.50. You can round to nearest 10th.

47.50/32.00=x/100

(or 32/47.50 = 100/x either way)

05/10/2011 10:54:15 PM · #13

x=148.4%

05/10/2011 10:54:22 PM · #14

id go with

x=(65/260)*100

x=25

Message edited by author 2011-05-10 22:57:34.

05/10/2011 10:54:43 PM · #15

15.5/32 = x/100 that formula will give you the markup that 15.5 is of $32

05/10/2011 10:58:30 PM · #16

Originally posted by FourPointX:

15.5/32 = x/100 that formula will give you the markup that 15.5 is of $32

Good point -- are you saying it's a 48% markup, or that the original is marked up 148%? I'm never quite sure of the terminology. $47.50 is indeed 148% of 32, but I'm thinking that it is called a 48% markup.

Message edited by author 2011-05-10 22:59:24.

05/10/2011 10:59:25 PM · #17

Originally posted by Socom:

id go with

x=(65/260)*100

x=25

this is correct, but the original problem was "use a proportion to solve"
i.e. x/y = a/b

05/10/2011 11:01:07 PM · #18

Originally posted by vawendy:

Originally posted by FourPointX:
15.5/32 = x/100 that formula will give you the markup that 15.5 is of $32

Good point -- are you saying it's a 48% markup, or that the original is marked up 148%? I'm never quite sure of the terminology. $47.50 is indeed 148% of 32, but I'm thinking that it is called a 48% markup.

right, it's 48% markup, ken asked for a formula to find the percentage of the markup only, the formula you gave is correct, but it's giving a formula for "what percentage of 32 is 47.5" which is 148%

05/10/2011 11:01:07 PM · #19

hit enter twice oops

Message edited by author 2011-05-10 23:01:24.

Tamron SP AF 28-75mm f/2.8 XR Di for Canon

05/10/2011 11:05:46 PM · #20

You need to make a formula from just the variables you have.. the rest is unknown

PGerst

Canon EOS-20D

05/10/2011 11:09:09 PM · #21

They are specifically asking to use (show) a proportion. First and foremost, a % sign always means "that amount" OF 100. The question is testing that particular knowledge.

90% is 90 OF 100 (90/100)
10% is 10 OF 100 (10/100)

260% is 260 OF 100 (260/100)

That 260/100 is the proportion concept they are testing.

A solution to show is simply:
260/100 = 2.6
2.6x = 65
x = 25

But, that is the algebraic solution. They want you to show the proportion setup:
260/100 = 65/x
x = 65/260*100

Originally posted by kenskid:

Use a proportion to solve:

65 is 260% of what number?

I can easily do the math...but how do you set up in the proportion format?

65/100 = x/260 type thing....

05/10/2011 11:09:18 PM · #22

so then...

65/x = 260/100

05/10/2011 11:09:48 PM · #23

Yes...basically the formula is 90% of the answer when the kid takes the test !

Originally posted by FourPointX:

Originally posted by vawendy:

Originally posted by FourPointX:
15.5/32 = x/100 that formula will give you the markup that 15.5 is of $32

Good point -- are you saying it's a 48% markup, or that the original is marked up 148%? I'm never quite sure of the terminology. $47.50 is indeed 148% of 32, but I'm thinking that it is called a 48% markup.

right, it's 48% markup, ken asked for a formula to find the percentage of the markup only, the formula you gave is correct, but it's giving a formula for "what percentage of 32 is 47.5" which is 148%

mgarsteck

Canon EOS-7D

Canon EF 85mm f/1.8 USM

05/10/2011 11:13:19 PM · #24

I never learned this stuff in 5th grade...